openssl: Fixes for ECDSA with OpenSSL 3.0

src/libstrongswan/plugins/openssl/openssl_util.h

@@ -46,6 +46,16 @@
  */
 bool openssl_compute_shared_key(EVP_PKEY *priv, EVP_PKEY *pub, chunk_t *shared);
 
+/**
+ * Calculate a fingerprint from the given key (cached under it).
+ *
+ * @param key		key object
+ * @param type		encoding type
+ * @param fp		allocated fingerprint
+ * @return			TRUE on success, FALSE otherwise
+ */
+bool openssl_fingerprint(EVP_PKEY *key, cred_encoding_type_t type, chunk_t *fp);
+
 /**
  * Creates a hash of a given type of a chunk of data.
  *